Elevator-brake.



N. W GUDMUNDSON.

ELEVATOR BRAKE.

' APPLIGATION FILED MAB. 1, 1912.

Patented Nov. 5, 1912.

C/MZ

NIELS W. GUDMUNDSON, OF SALT LAKE CITY, UTAH.

ELEVATOR-BRAKE.

Specification of Letters Patent.

Patented Nov. 5, 1912.

Application filed March 1, 1912. Serial No. 680,984.

To all whom it may concern:

Be it known that I, NIELS WV. GUDMUND- SON, a citizen of the UnitedStates, residing at Salt Lake City, in the county of Salt Lake and Stateof Utah, have invented certain new and useful Improvements inElevator-Brakes, of which the following is a.

specification.

My invention relates to elevator brakes and has for its object toprovide a temporary brake for an elevator which is set by the operatorto stop the elevator platform exactly even with the floor and may beused with or without the brake on the power of the elevator. Theseobjects I accomplish with the apparatus illustrated in the accompanyingdrawings in which similar letters of reference indicate like partsthroughout the several figures.

Figure 1 is a vertical sect-ion longitudinally through the brake andelevator platform and one of the uprights and a vertical elevation ofanother one of the uprights, showing the brake set at or even with thefloor. Fig. 2 is a similar section, showing the brake released.

My apparatus consists ofa horizontally carried brake bolt 1, slidablycarried below the floor 2 of an elevator platform, by means of the guidehangers 3. Said brake bolt 1 has a portion of one end formed as an eX-tended lug or tenon 4, on which is fitted a brake shoe 5, and detachablyheld on said tenon by the pin 6. This brake shoe is to provide foreasily replacing the wearing parts of my brake. In the floor of theelevator platform is cut an opening 7 over which is fastened a fioorplate 8 having a central opening 9 therethrough. WVithin said opening ismade to operate the foot plunger 10, which has a flanged head 11thereon. Between the said floor plate 8 and said flanged head 11 andcarried on the said plunger 10 is the spirally wound spring 12- whichnormally holds said foot plunger 10 in the position shown in Fig. 2-.Between the lower end of said foot plunger 10 and said brake bolt 1, andpivotally connected with each is the link 13. One side of said opening 7is out at an incline to receive the said link 13, and the opposite sideof said spring 12 will raise opening has fitted therein a wearing plate14, which is held and supported in place by another one of the guidehangers 3.

To enable the operator to fully set the brake and to insure the stoppingof the ele vator platform exactly even with the floors A of the room, anopen cut 15 is provided in the side of the upright 16 in the side of theelevator shaft adjacent the brake shoe 5, within which open cut 15 theend of the brake bolt 1 carrying the brake shoe 5 engages when theoperator sets the brake to stop at a floor. As will be obvious theelevator platform may be retarded in its ascent or descent when thebrake shoe 5 is in friction contact at any point on said upright 16.

In the operation of my apparatus when the operator desires to stop evenwith a floor he presses on the flanged head 11 of said foot plunger 10which depresses the plunger and causes the linkl3 and plunger bolt 1 toassume the position shown in Fig. 1. When the operator releases thepressure on the flanged head 11 of the foot plunger 10, the said footplunger and the parts connected therewith to the position shown in Fig.2, leaving the elevator platform to ascend or descend.

Having thus described my invention I desire to secure by Letters Patentand claim:

In an elevator platform brake the combination with an upright havingopen cuts therein, a plunger bolt, a brake shoe detachably fitted on theend of said plunger bolt, a wearing plate secured in one side of anopening in the elevator platform floor, a foot plunger slidably fittedwithin said opening and adjacent said wearing plate, a link pivotallyconnecting said footplunger and said plunger bolt and a spiral springcarried on said foot plunger adapted to normally hold said foot plungerin a raised position.

In testimony whereof I have affixed my signature in presence of twowitnesses.

N IELS W. GUDMUNDSON.

Witnesses:

SAM RANEY, W. R. WILLIAMS.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, I). G.

